Bubblers | Bubblers offer smokers a number of increased advantages. With a water bubbler, the smoke from the burning tobacco is bubbled through the water in the bulb and the water helps to cool down the usually hot smoke. The water also helps to filter the smoke as water soluble tar is dissolved as it passes through the water. The smoke chamber of the bubbler allows smoke to accumulate so that the smoker enjoys denser and larger quantities of smoke.